CN109747370B - Air conditioning system for vehicle - Google Patents

Air conditioning system for vehicle Download PDF

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Publication number
CN109747370B
CN109747370B CN201810182645.XA CN201810182645A CN109747370B CN 109747370 B CN109747370 B CN 109747370B CN 201810182645 A CN201810182645 A CN 201810182645A CN 109747370 B CN109747370 B CN 109747370B
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CN
China
Prior art keywords
air
vehicle
refrigerant
moisture
passenger compartment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810182645.XA
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Chinese (zh)
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CN109747370A (en
Inventor
权东浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Motor Co
Kia Corp
Original Assignee
Hyundai Motor Co
Kia Motors Corp
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Filing date
Publication date
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Publication of CN109747370A publication Critical patent/CN109747370A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B60H3/0633—Filter arrangements in the air stream with provisions for regenerating or cleaning the filter element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3229—Cooling devices using compression characterised by constructional features, e.g. housings, mountings, conversion systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1475—Removing carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00035—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment
    • B60H1/00042—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment the air passing only one heat exchanger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/008—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being air quality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00835—Damper doors, e.g. position control
    • B60H1/00849—Damper doors, e.g. position control for selectively commanding the induction of outside or inside air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3202—Cooling devices using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3233—Cooling devices characterised by condensed liquid drainage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3233—Cooling devices characterised by condensed liquid drainage means
    • B60H1/32331—Cooling devices characterised by condensed liquid drainage means comprising means for the use of condensed liquid, e.g. for humidification or for improving condenser performance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0007—Adding substances other than water to the air, e.g. perfume, oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0007—Adding substances other than water to the air, e.g. perfume, oxygen
    • B60H3/0014—Adding substances other than water to the air, e.g. perfume, oxygen characterised by the location of the substance adding device
    • B60H3/0021—Adding substances other than water to the air, e.g. perfume, oxygen characterised by the location of the substance adding device in the air-conditioning housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
    • B60H3/022—Moistening ; Devices influencing humidity levels, i.e. humidity control for only humidifying the air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0007—Adding substances other than water to the air, e.g. perfume, oxygen
    • B60H2003/0042—Adding substances other than water to the air, e.g. perfume, oxygen with ventilating means for adding the substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
    • B60H2003/028—Moistening ; Devices influencing humidity levels, i.e. humidity control the devices comprising regeneration means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0085—Smell or pollution preventing arrangements

Abstract

A vehicle air conditioning system comprising: a cold air circulation section in which air inside a vehicle is cooled via heat exchange with a refrigerant and supplied to a passenger compartment; a hot air circulation section in which the temperature of the air in the vehicle is raised via heat exchange and then supplied again to the passenger compartment; a purge circulation section in which air inside the vehicle is introduced and purified, and then supplied again to the passenger compartment; and a refrigerant circulation section, wherein the refrigerant circulates to undergo heat exchange with the cold air circulation section and the hot air circulation section. The vehicle air conditioning system isolates an in-vehicle air flow path from an out-of-vehicle air flow path to block out-of-vehicle air when performing air conditioning, and performs air conditioning of a passenger compartment using only in-vehicle air without in-vehicle air.

Description

Air conditioning system for vehicle
Technical Field
The present invention relates to an air conditioning system for a vehicle, and more particularly, to a vehicle air conditioning system operable such that the inside and outside of a vehicle are completely isolated from each other to prevent air pollution.
Background
An air conditioning system for a vehicle is used to perform heating/cooling or ventilation of a passenger compartment of the vehicle and to perform air conditioning by introducing a small amount of outside air together with the inside air, and an inside air mode is set even when the air conditioning of the vehicle is performed.
However, due to the increasing prevalence of air pollution, when contaminants such as fine dust introduced from outside the vehicle in the in-vehicle air mode are not completely prevented, there is a possibility that the health of the user may be deteriorated.
Therefore, in order to prevent such air pollution in the vehicle. The air in the vehicle is purified using a vehicle air purifier or the like, but the effect thereof is insufficient and it is difficult to fundamentally prevent air pollution.
The details described as background are only for the purpose of facilitating an understanding of the background of the invention and are not to be construed as an admission that the prior art is not material to one of ordinary skill in the art.
Disclosure of Invention
The present invention provides a vehicle air conditioning system that operates such that the inside and outside of a vehicle are completely isolated from each other to prevent air pollution, thereby fundamentally preventing the introduction of harmful substances into the passenger compartment of the vehicle.
In accordance with one aspect of the present invention, the above and other objects can be accomplished by the provision of an air conditioning system for a vehicle, comprising: a cold air circulation section in which air inside a vehicle is cooled via heat exchange with a refrigerant and then supplied to a passenger compartment; a hot air circulation section in which the temperature of air in the vehicle is raised via heat exchange and then supplied again to the passenger compartment; a purge circulation section in which in-vehicle air of the vehicle is introduced and purified and then supplied again to the passenger compartment; and a refrigerant circulation section in which the refrigerant circulates to undergo heat exchange with the cold air circulation section and the hot air circulation section, wherein the vehicle air conditioning system isolates an in-vehicle air flow path for the vehicle and an out-of-vehicle air flow path from each other to block out-of-vehicle air when air conditioning is performed, and performs air conditioning of the passenger compartment using only in-vehicle air without the in-vehicle air entering.
The cold air circulation section may be configured as an evaporator that shares the refrigerant circulation section such that the in-vehicle air is cooled via heat exchange with the evaporator and then supplied again to the passenger compartment.
The hot air circulation section may be configured as an in-vehicle air conditioning condenser that shares the refrigerant circulation section such that the temperature of in-vehicle air is raised via heat exchange with the in-vehicle air conditioning condenser and then supplied again to the passenger compartment.
The purification cycle section may include a carbon dioxide absorber, which may include a housing and a carbon dioxide scavenger disposed in the housing, the carbon dioxide absorber being disposed to be replaceable.
The purge cycle section may include an air scrubber, which may include: a housing storing purified water therein, provided at one side thereof with an air inlet for introducing air in a vehicle, and provided at the remaining side thereof with an air outlet for discharging purified air having passed through the purified water; and a pressure member applying pressure to the inside of the housing to cause discharge of air in the vehicle introduced through the air inlet to pass the purified water.
The housing may include an upstream side in which the air inlet and the pressure member are provided, and a downstream side in which the air outlet is provided, and a circulation flow path that circulates the purified water to the upstream side when the purified water reaches a predetermined level may be provided, and a circulation gate that opens or closes the circulation flow path may be provided, and the circulation gate is opened when the pressure member applies pressure to the purified water so that the purified water in the downstream side circulates to the upstream side through the circulation flow path, thereby discharging only the purified air to the outside of the housing.
The purification cycle may include an oxygen generator, which may include a water tank in which water is stored, and a decomposer which performs electrolysis on the water within the water tank, and may generate oxygen by electrolyzing the water in the water tank by the decomposer, so that the generated oxygen is supplied to the passenger compartment.
The oxygen generator may further include an oxygen compressor, and the oxygen compressor may maintain a pressure within the oxygen generator at a pressure that easily generates electrolysis when the decomposer performs electrolysis of water.
The purge cycle section may include a moisture supplier, which may include a moisture collector collecting moisture therein and a moisture controller processing and supplying the moisture collected in the moisture collector.
The moisture collector may include a sterilizer configured to sterilize the collected moisture, and the sterilizer may be located near the compressor of the refrigerant circulation section such that bacteria in the moisture present in the moisture collector are killed by the high temperature of the compressor.
The sterilizer may include a sterilizing tank through which a refrigerant flow path downstream of the compressor passes, and the collected moisture may be stored in the sterilizing tank and then sterilized.
The sterilizer may be a sterilizing flow path wound around an outer circumferential surface of the refrigerant flow path downstream of the compressor, and the moisture collected in the moisture collector may pass through the sterilizing flow path so that bacteria in the moisture are killed.
A multi-way valve may be provided downstream of the compressor in a refrigerant movement direction to be controlled by the controller, and the multi-way valve may be controlled by the controller to select at least one of the sterilizer and the in-vehicle air-conditioning condenser to supply the refrigerant thereto, thereby performing at least one of in-vehicle heating or wet air sterilization.
The moisture collector may be a condensate tank in which condensate water generated in an evaporator of the refrigerant circulation section is stored, the refrigerant flow path at one side of the evaporator may be provided with an air flow path through which air passes, and drain holes may be formed below the air flow path in a direction of gravity such that the condensate water is collected in the condensate water tank through the drain holes.
The air flow path may be provided with a washing part communicating with the outside, and the washing part may include an introduction port and a discharge port such that fluid introduced through the introduction port moves along the air flow path to wash the inside of the air flow path, and then the fluid is discharged through the discharge port to kill mold in the condensed water.
The moisture collector may be a rain water reservoir arranged in communication with the exterior of the vehicle such that rain water outside the vehicle is collected in the rain water reservoir.
The purge cycle section may include a concentration sensing member that measures a concentration of a specific gas contained in the air in the vehicle, and may control an operation of the moisture supplier based on the concentration of oxygen and/or the concentration of carbon dioxide in the passenger compartment sensed by the concentration sensing member.
The controller may determine the number of passengers in the vehicle based on information of a decrease in the amount of oxygen or an increase in the amount of carbon dioxide in the passenger compartment sensed by the concentration sensing element, and may consider the determined number of passengers in the air conditioning of the passenger compartment.
The purge cycle section may include a concentration sensing part that measures a concentration of a specific gas contained in the in-vehicle air, the controller may determine a mass of the in-vehicle air based on information related to a concentration of oxygen and/or a concentration of carbon dioxide in the passenger compartment sensed by the concentration sensing part and a reference value input to the controller in advance, and the purge cycle section may be controlled such that the mass of the in-vehicle air is maintained at the reference value or more.
The controller may determine the number of passengers in the vehicle based on information related to whether the passengers are present transmitted from the passenger sensing member provided in the seat, and may control the degree of operation of at least one of the cool air circulation section, the warm air circulation section, the purge circulation section, and the refrigerant circulation section based on the number of passengers.
The purge cycle section may include at least one of a carbon dioxide absorber, an air scrubber, an oxygen generator, and a moisture supplier, and moisture collected in the moisture supplier may be provided to the air scrubber and/or the oxygen generator.
The vehicle body may be provided with a pressure retainer configured to open or close, and the door may be opened or closed when the pressure retainer counteracts a pressure difference between an exterior and an interior of the vehicle.
The cold air circulation section and the refrigerant circulation section may further include a controller configured to control the cold air circulation section and the refrigerant circulation section, and in the cooling mode, the controller may perform control to cause cooling of the in-vehicle air via heat exchange with a refrigerant that is cooled via an evaporator of the refrigerant circulation section such that the cooled in-vehicle air is supplied again to the passenger compartment.
The hot air circulation section and the refrigerant circulation section may further include a controller configured to control the hot air circulation section and the refrigerant circulation section, and in the heating mode, the controller may perform control to cause the temperature of the in-vehicle air to be raised via heat exchange with the refrigerant (the temperature of which is raised via the in-vehicle air conditioning condenser and the compressor of the refrigerant circulation section) so as to resupply the air having the raised temperature to the passenger compartment.
The purge cycle section and the refrigerant cycle section may further include a controller configured to control the purge cycle section and the refrigerant cycle section, and in the purge mode, the controller may perform control to cause the in-vehicle air processed by the compressor of the refrigerant cycle section and then purified to be supplied again to the passenger compartment.
Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a diagram illustrating a vehicle air conditioning system according to an embodiment of the present invention;
FIGS. 2 and 3 are views illustrating an air scrubber;
fig. 4 to 6 are views illustrating a moisture collector;
FIG. 7 is a view illustrating a pressure retainer; and is also provided with
Fig. 8 and 9 are views illustrating a sterilizer.
Detailed Description
It is to be understood that the term "vehicle" or "vehicular" or other similar terms as used herein include motor vehicles in general, such as passenger vehicles including Sport Utility Vehicles (SUVs), buses, trucks, various commercial vehicles, boats including various boats and ships, aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen powered vehicles, and other alternative fuel vehicles (e.g., fuel from sources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle having two or more power sources, such as gasoline powered and electric vehicles.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In the description, unless explicitly described to the contrary, the word "comprise" and variations such as "comprises" or "comprising" will be understood to imply the inclusion of stated elements but the exclusion of any other elements. In addition, the terms "unit," "article," "device," and "module" described in the specification denote a unit for processing at least one function and operation, and may be implemented by hardware components or software components and combinations thereof.
Further, the control logic of the present invention may be embodied as a non-transitory computer readable medium on a computer readable medium containing program instructions executable by a processor, controller, or the like. Examples of computer readable media include, but are not limited to, ROM, RAM, compact Disk (CD) -ROM, magnetic tape, floppy disk, flash drive, smart card, and optical data storage device. The computer readable medium CAN also be distributed over network coupled computer systems so that the computer readable medium is stored and executed in a distributed fashion, such as by an information technology server or Controller Area Network (CAN).
Hereinafter, a vehicle air conditioning system according to various representative embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a view illustrating a vehicle air conditioning system according to an embodiment of the present invention, fig. 2 and 3 are views illustrating an air scrubber 530, and fig. 4 to 6 are views illustrating a moisture collector 571. In addition, fig. 7 is a view illustrating the pressure holder 600, and fig. 8 and 9 are views illustrating the sterilizer 572.
A vehicle air conditioning system according to an exemplary embodiment of the present invention includes: a cold air circulation section 100 in which air inside the vehicle is cooled via heat exchange with a refrigerant and then supplied to the passenger compartment 10; a hot air circulation section 300 in which the temperature of the air in the vehicle is raised via heat exchange and then supplied again to the passenger compartment 10; a purge circulation section 500 in which in-vehicle air of the vehicle is introduced and purified and then supplied again to the passenger compartment 10; and a refrigerant circulation section 700 in which the refrigerant circulates to undergo heat exchange with the cold air circulation section 100 and the hot air circulation section 300. The air conditioning system prevents the outside air when performing air conditioning, because the outside air flow path and the inside air flow path are isolated from each other, so that air conditioning of the passenger compartment 10 is performed using only the inside air, and the outside air does not enter. That is, in the present invention, the vehicle air conditioning system is configured such that the air flow path for the air conditioning of the passenger compartment is independently configured for the outside use and the inside use, and is capable of providing pleasant air to the user by circulating and using 100% of the inside air (the outside air is not used during the air conditioning process) to prevent the inside of the passenger compartment 10 from being contaminated with the environment such as fine dust or toxic particles.
The vehicle air conditioning system of the present invention is applicable to all types of vehicles, including autonomous vehicles that can be driven without manual operation of components by a user. The vehicle air conditioning system of the present invention performs air conditioning via repeated circulation of the in-vehicle air through the constituent elements in the passenger compartment 10 and the engine compartment 30, but prevents problems such as accumulation of excessive carbon dioxide, oxygen deficiency, and air pollution that may occur due to repeated use of the in-vehicle air, thereby improving the quality of the in-vehicle air due to the elimination of the out-of-vehicle air, simplifying basic heating and cooling, and increasing fuel efficiency.
The vehicle air conditioning system of the present invention is configured to cool, heat, or purify the air in the passenger compartment 10 via the refrigerant circulation section 700, and then supply the air in the passenger compartment 10 again. As illustrated in fig. 1, the vehicle air conditioning system is composed of a cool air circulation section 100, a warm air circulation section 300, a purge circulation section 500, and a refrigerant circulation section 700. The cold air circulation section 100 is configured to share the evaporator 710 of the refrigerant circulation section 700 such that the in-vehicle air is cooled via heat exchange with the evaporator 710 and then supplied again to the passenger compartment 10. In the same manner, the hot air circulation section 300 is configured as the in-vehicle air conditioning condenser 730 that shares the refrigerant circulation section 700, so that the temperature of the in-vehicle air is raised via heat exchange with the in-vehicle air conditioning condenser 730, and then supplied again to the passenger compartment 10. In addition, the purge cycle section 500 includes at least one of a carbon dioxide absorber 510, an air scrubber 530, an oxygen generator 550, and a moisture supplier 570. When the moisture collected in the moisture supplier 570 is supplied to the air scrubber 530 and/or the oxygen generator 550, problems such as accumulation of excessive carbon dioxide, oxygen deficiency, and air pollution can be avoided regardless of the circulation of the air in the vehicle. The detailed construction of the purge circulation section 500 will be described later. Finally, the refrigerant circulation section 700 is a closed circuit in which the refrigerant circulates through the refrigerant flow path 750, and the refrigerant circulates by passing through the exterior condenser 770, the first expansion valve 780, the compressor 720, the evaporator 710, the interior air conditioning condenser 730, and the second expansion valve 790. In particular, the first and second expansion valves 780 and 790 are configured to selectively perform a function as an expansion valve and a function as a refrigerant valve depending on whether a cooling mode or a heating mode is active.
The purge cycle section 500 will be described in more detail below.
The purge cycle section 500 includes a carbon dioxide absorber 510. In the passenger compartment 10 of the vehicle, as the user breathes, the oxygen in the air decreases and the relative proportion of carbon dioxide increases. Accordingly, since drowsiness may be caused and dyspnea may occur due to the lack of oxygen, the in-vehicle air is guided through the carbon dioxide absorber 510 so that carbon dioxide contained in the in-vehicle air is removed. Carbon dioxide absorber 510 may include a housing (not illustrated) and a carbon dioxide scavenger (not illustrated) disposed in the housing (not illustrated). The carbon dioxide removing agent (not illustrated) may use a common chemical agent such as soda lime or soda absorbent (soda sorb). In particular, in the present invention, a carbon dioxide absorber 510 is provided in the engine room 30. The carbon dioxide absorber 510 may be replaced when the carbon dioxide saturation of the carbon dioxide remover increases after the carbon dioxide remover has been used longer than a predetermined period of time and the carbon dioxide remover is no longer effectively absorbing carbon dioxide. The chemical reaction equation that occurs in the carbon dioxide absorber 510 is expressed as follows.
Ca(OH) 2 +CO 2 →CaCO 3 ↓+H 2 O
(here, ca (OH) 2 Is soda lime. )
At this time, the moisture generated in the carbon dioxide absorber 510 may be supplied to the moisture supplier 570 of the purification cycle section 500 and reused therein.
Fig. 2 and 3 are views illustrating the air scrubber 530, and the purge circulation section 500 includes the air scrubber 530. When a user in the passenger compartment 10 of the vehicle opens or closes a door or window, contaminants such as fine dust outside the vehicle, various floats, or Volatile Organic Compounds (VOCs) may be introduced into the passenger compartment 10 and may contaminate the air within the passenger compartment 10. Accordingly, since a user may be injured when continuously circulating contaminated in-vehicle air, the in-vehicle air is passed through the air scrubber 530 so that contaminants contained in the in-vehicle air are removed. The air scrubber 530 includes a housing 531 storing purified water in the housing 531, and a pressure member 536 applying pressure to the inside of the housing 531. The housing 531 is provided with an air inlet 532 at one side thereof, in which air in the vehicle is introduced into the air inlet 532, and the housing 531 is provided with an air outlet 533 at the other side thereof, from which air outlet 533 the purified air having passed through the purified water is discharged. In particular, the housing 531 may be formed of an upstream side 534 and a downstream side 535, with an air inlet 532 and a pressure member 536 disposed on the upstream side 534 and an air outlet 533 disposed on the downstream side 535. The downstream side 535 is provided with a circulation flow path 537, and when the purified water reaches a predetermined level, the circulation flow path 537 causes the purified water to circulate to the upstream side 534, and the circulation flow path 537 is provided with a circulation gate 538 that opens or closes the circulation flow path 537. When the pressure piece 536 applies pressure to the purified water, the circulation gate 538 opens so that the purified water in the downstream side 535 circulates to the upstream side 534 through the circulation flow path 537. The pressure member 536 may be a piston. Therefore, when the pressure piece 536 applies pressure to the inside of the housing 531 via the piston movement, the in-vehicle air introduced through the air inlet 532 passes through the purified water in the housing 531, so that the contaminants are collected in the purified water, and only the purified air that has passed through the purified water is discharged through the air outlet 533. When the circulation door 538 is opened by the pressure applied by the pressure piece 536 so that the purified water in the downstream side 535 of the housing 531 moves to the upstream side 534 through the circulation flow path 537, only the purified air can be discharged to the outside of the housing 531 in addition to the purified water.
The purge cycle section 500 includes an oxygen generator 550. In the passenger compartment 10 of the vehicle, since the amount of oxygen in the air may decrease as the user breathes, resulting in dyspnea, additional oxygen must be supplied to the passenger compartment 10. Accordingly, oxygen is generated via the separately provided oxygen generator 550, and is supplied to the passenger compartment 10. The oxygen generator 550 includes a water tank (not illustrated) in which water is stored, and a decomposer (not illustrated) which performs electrolysis (hydrolysis) of water within the water tank (not illustrated). Accordingly, oxygen is generated by a decomposer (not illustrated) through electrolysis of water in a water tank (not illustrated), and the generated oxygen is supplied to the passenger compartment 10. The oxygen generator 550 further includes an oxygen compressor 555, and the oxygen compressor 555 maintains the inside of the oxygen generator 550 at a pressure at which electrolysis easily occurs when a decomposer (not illustrated) performs electrolysis of water, thereby contributing to efficient performance of electrolysis. The chemical reaction equation that occurs in the oxygen generator 550 is expressed as follows.
2H 2 O(I)→O 2 (g)+4e - +4H +
Accordingly, oxygen generated via the oxygen generator 550 is supplied to the passenger compartment 10 to prevent dyspnea of the user.
In addition, fig. 4 to 6 are views illustrating the moisture collector 571, and the purge circulation unit 500 further includes a moisture supplier 570. The air scrubber 530 and the oxygen generator 550 require moisture to perform corresponding operations. At this time, although moisture generated in the carbon dioxide absorber 510 may be used, a moisture supplier 570 is provided to efficiently and appropriately supply a larger amount of moisture. The moisture supplier 570 includes a moisture collector 571 and a moisture controller 575, the moisture collector 571 collecting moisture therein, the moisture controller 575 processing and supplying the moisture collected in the moisture collector 571. The moisture controller 575 serves to appropriately process the moisture collected in the moisture collector 571 and effectively supply the moisture to the air scrubber 530 and the oxygen generator 550.
In addition, the moisture collector 571 may be a condensate water tank 576, and condensate water generated in the evaporator 570 of the refrigerant cycle 700 is stored in the condensate water tank 576. Accordingly, the refrigerant flow path 750 at one side of the evaporator 710 is provided with an air flow path 751, air passes through the air flow path 751, and a drain hole 753 is formed below the air flow path 751 in the direction of gravity, so that condensed water is collected in the condensed water tank 576 through the drain hole 753. At this time, the moisture collector 571 may be formed in the refrigerant flow path 750, and may be a refrigerant reservoir in which the refrigerant cooled by the evaporator 710 is stored. The moisture collector 571 is illustrated in the present specification as a refrigerant reservoir, but may have any other shape as long as it is formed at a side of the evaporator 710. In particular, the air flow path 751 of the moisture collector 571 is provided with a washing part 755, which may communicate with the outside of the air flow path 751. The washing part 755 includes an introduction port 757 and a discharge port 759, and a fluid (including detergent, water, etc.) introduced through the introduction port 757 moves along the air flow path 751 to wash the inside of the air flow path 751 and then is discharged through the discharge port 759. The reason for providing the washing part 755 is that the moisture collector 571 uses condensed water condensed in the evaporator 710, and thus microorganisms such as mold may be contained in the condensed water. Accordingly, when the air flow path 751 is washed via the washing part 755, foreign substances such as mold contained in the condensed water can be removed, which can allow cleaner air to be supplied to the user. In addition, the moisture collector 571 may be a rain water reservoir 577, the rain water reservoir 577 being provided to communicate with the outside of the vehicle. Accordingly, rainwater outside the vehicle may be collected in the rainwater tank 577 and treated with the refrigerant circulation section 700, and then may be provided to the air scrubber 530 or the oxygen generator 550. The moisture collector 571 is illustrated and described as comprising a condensate water tank 576 and a rain water tank 577, but may be configured to include only one of these two.
In addition, the purge cycle section 500 includes a concentration sensing member (not illustrated) that measures the concentration of a specific gas contained in the air in the vehicle. Although the in-vehicle air contains various types of gases, among these gases, the concentration sensing member senses the concentration of oxygen and carbon dioxide that particularly affects the user. Accordingly, the operation of the moisture supplier 570 is controlled based on the concentration of oxygen and/or the concentration information of carbon dioxide in the passenger compartment sensed by the concentration sensing member. When the concentration of oxygen in the passenger compartment sensed by the concentration sensing member is higher than the reference concentration, control is performed to stop the supply of moisture. When the sensed concentration of oxygen is lower than the reference concentration, control is performed to start supply of moisture or increase the amount of supplied moisture.
The controller 900 determines the number of passengers in the vehicle based on information such as a decrease in the amount of oxygen in the passenger compartment, an increase in the amount of carbon dioxide, etc., sensed by the concentration sensing element, and reflects the result of the determination in the air conditioning of the passenger compartment. That is, since the concentration of the required oxygen varies according to the number of passengers in the passenger compartment, the concentrations of oxygen and carbon dioxide contained in the air in the vehicle may be appropriately adjusted based on data such as the concentration of the required oxygen, the amount of tolerable carbon dioxide, etc. depending on the number of passengers inputted to the controller 900 in advance.
That is, the purge circulation unit 500 includes a concentration sensing part that measures the concentration of a specific gas contained in the in-vehicle air, the controller 900 determines the quality of the in-vehicle air based on information related to the concentration of oxygen and/or the concentration of carbon dioxide in the passenger compartment sensed by the concentration sensing part, and a reference value input to the controller 900 in advance, and controls the purge circulation section 500 so that the quality of the in-vehicle air is maintained at the reference value or more, whereby pleasant air can be supplied to the user to increase user satisfaction.
In particular, a vehicle seat (not illustrated) is generally provided with a sensor, such as a Seat Belt Resistor (SBR) sensor, which checks whether a passenger wears a seat belt, so that the controller 900 can determine the number of passengers by recognizing the presence or absence of the passenger. Accordingly, the controller 900 determines the number of passengers in the vehicle based on information of whether there are passengers obtained using a passenger sensing part (not illustrated) such as an SBR sensor or a seat sensor, and may control the degree of operation of at least one of the cool air circulation section 100, the warm air circulation section 300, the purge circulation section 500, and the refrigerant circulation section 700 based on the number of passengers and a reference value inputted into the controller 900 in advance, thereby providing a more pleasant in-vehicle environment to the user.
Fig. 8 and 9 are views illustrating the sterilizer 572. The moisture collector 571 further includes a sterilizer 572 that sterilizes the collected moisture. As described above, since the moisture collector 571 collects condensed water from the evaporator 710 or external rainwater, foreign substances, microorganisms, and the like may be contained in the moisture. Accordingly, when the moisture is sterilized via the sterilizer 572, cleaner moisture may be provided, and cleaner air may be supplied to the passenger compartment 10. The sterilizer 572 may be located proximate to the compressor 720 of the refrigerant cycle section 700. This is because the temperature of the compressor 720 is approximately 100-120 c, which can boil and sterilize the moisture. Thus, bacteria such as microorganisms present in the moisture such as in the moisture collector 571 are killed by the high temperature of the compressor 720. As illustrated in fig. 8, the sterilizer 572 may be a sterilization flow path 574 that wraps around the outer circumferential surface of the refrigerant flow path 750 downstream of the compressor 720. Accordingly, when the moisture collected in the moisture collector 571 passes through the sterilizing fluid passage 574, bacteria within the moisture are killed by the high temperature of the compressor 720. In addition, as illustrated in fig. 9, the sterilizer 572 may be a sterilization tank 573, with the refrigerant flow path 750 downstream of the compressor 720 passing through the sterilization tank 573. In the same manner, after storing the collected moisture in the sterilizing compartment 573, microorganisms and the like in the moisture are sterilized by the high temperature of the compressor 720.
In addition, fig. 7 is a view illustrating the pressure holder 600, and the pressure holder 600 is provided on the vehicle body to be opened or closed. When the passenger compartment 10 is isolated and sealed from the outside to allow only the in-vehicle air to circulate in the passenger compartment 10, there is a pressure difference between the passenger compartment 10 and the outside. This can make it difficult to open or close doors (not illustrated) for passenger ingress and egress, user boarding and disembarking. Therefore, when the pressure holder 600 is provided on the vehicle body, it is possible to remove the pressure difference between the passenger compartment 10 and the outside. In particular, the pressure holder 600 is variably provided to enable precise opening/closing adjustment. In addition, since the atmospheric pressure in the passenger compartment 10 of the vehicle can be maintained at a predetermined level or less by the pressure retainer 600, the atmospheric pressure in the passenger compartment 10 can be controlled to be optimized, thereby preventing the user in the passenger compartment 10 from dying from oxygen poisoning. At this time, the predetermined level may be 0.21atm.
The refrigerant circulation section 700 includes a multi-way valve 800 disposed downstream of the compressor 720 in the refrigerant moving direction and controlled by the controller 900. The multi-way valve 800 may be controlled by the controller 900 to select at least one of the sterilizer 572 and the in-vehicle air-conditioning condenser 730 to enable supply of refrigerant thereto, thereby allowing at least one of in-vehicle heating and humidity sterilization to be performed. Accordingly, in the heating mode, the heated refrigerant may be supplied to the sterilizer 572 and the in-vehicle air-conditioning condenser 730, so that sterilization of the moisture in the moisture supplier 570 and in-vehicle heating may be simultaneously performed.
A controller 900 is provided in the cool air circulation process 100, the warm air circulation process 300, the purge circulation process 500, and the refrigerant circulation process 700 to control the cool air circulation process 100, the warm air circulation process 300, the purge circulation process 500, and the refrigerant circulation process 700. Accordingly, in the cooling mode, the controller 900 performs control to cause cooling of the in-vehicle air via heat exchange with the refrigerant, cooling of the refrigerant via the evaporator 710 of the refrigerant cycle 700, so that the cooled in-vehicle air is supplied again to the passenger compartment 10. In addition, in the heating mode, the controller 900 performs control to cause the temperature of the in-vehicle air to be raised via heat exchange with the refrigerant, the temperature of the refrigerant to be raised via the in-vehicle air-conditioning condenser 730 and the compressor 720 of the refrigerant circulation section 700, so that the air having the raised temperature is supplied again to the passenger compartment 10. Finally, in the purge mode, the controller 900 performs control to cause the in-vehicle air processed by the compressor 720 of the refrigerant cycle section 700 and then purified to be supplied again to the passenger compartment 10.
As is apparent from the above description, according to the vehicle air conditioning system having the above-described structure, air conditioning is performed using in-vehicle air through repeated circulation of constituent elements in the passenger compartment and the engine compartment, and problems that may occur due to repeated use of in-vehicle air, such as excessive carbon dioxide, oxygen deficiency, and air pollution, can be solved, so that it is not necessary to introduce air from the outside. Accordingly, the quality of air in the vehicle can be improved, control and configuration for basic heating and cooling can be simplified, and fuel efficiency can be increased.
Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will recognize that the present invention may be implemented in various other embodiments without changing its technical idea or features.

Claims (23)

1. A vehicle air conditioning system comprising:
a cold air circulation section in which in-vehicle air of a vehicle is cooled via heat exchange with a refrigerant and then supplied to a passenger compartment;
a hot air circulation section in which the temperature of the in-vehicle air of the vehicle is raised via heat exchange, and then the in-vehicle air is supplied again to the passenger compartment;
a purge circulation section in which in-vehicle air of the vehicle is introduced and purified, and then the in-vehicle air is supplied again to the passenger compartment; and
a refrigerant circulation section in which the refrigerant circulates to undergo heat exchange with the cold air circulation section and the hot air circulation section,
wherein the vehicle air conditioning system performs air conditioning of the passenger compartment using only in-vehicle air without in-vehicle air entering the passenger compartment, while blocking in-vehicle air when performing air conditioning, using in-vehicle air and out-of-vehicle air flow paths isolated from each other,
wherein the purification and circulation section comprises an air scrubber,
wherein, the air scrubber includes: a housing storing purified water therein, provided at one side thereof with an air inlet for introducing air in a vehicle, and provided at the remaining side thereof with an air outlet for discharging purified air having passed through the purified water; and a pressure member applying pressure to the inside of the housing to cause discharge of in-vehicle air introduced through the air inlet port to pass purified water,
wherein the housing includes an upstream side in which the air inlet and the pressure member are provided, and a downstream side in which the air outlet is provided,
wherein the downstream side is provided with a circulation flow path that circulates the purified water to the upstream side when the purified water reaches a predetermined level, and
wherein the circulation flow path is provided with a circulation door that opens or closes the circulation flow path, and when the pressure member applies pressure to the purified water so that the purified water in the downstream side circulates to the upstream side through the circulation flow path, the circulation door is opened, thereby discharging only the purified air to the outside of the casing.
2. The system of claim 1, wherein the cool air circulation section is configured to share an evaporator of the refrigerant circulation section such that in-vehicle air is cooled via heat exchange with the evaporator and then supplied again to the passenger compartment.
3. The system according to claim 1, wherein the hot air circulation section is configured to share an in-vehicle air conditioning condenser of the refrigerant circulation section such that a temperature of in-vehicle air is raised via heat exchange with the in-vehicle air conditioning condenser, and then the in-vehicle air is supplied again to the passenger compartment.
4. The system of claim 1, wherein:
the purification cycle section includes a carbon dioxide absorber;
the carbon dioxide absorber comprises a shell and a carbon dioxide remover arranged in the shell; and is also provided with
The carbon dioxide absorber is arranged to be replaceable.
5. The system of claim 1, wherein:
the purification cycle section comprises an oxygen generator;
the oxygen generator includes a water tank in which water is stored, and a decomposer which performs electrolysis on the water in the water tank; and is also provided with
Oxygen is generated by electrolysis of water in the water tank by the decomposer, so that the generated oxygen is supplied to the passenger compartment.
6. The system of claim 5, wherein:
the oxygen generator further comprises an oxygen compressor; and is also provided with
The oxygen compressor maintains the pressure within the oxygen generator at a gas pressure that readily generates electrolysis when the decomposer performs electrolysis of water.
7. The system of claim 1, wherein:
the purge cycle section includes a moisture supply; and is also provided with
The moisture supplier includes a moisture collector that collects moisture therein, and a moisture controller that processes and supplies the moisture collected in the moisture collector.
8. The system of claim 7, wherein:
the moisture collector includes a sterilizer configured to sterilize the collected moisture; and is also provided with
The sterilizer is located close to a compressor of the refrigerant circulation section such that bacteria in moisture present in the moisture collector are killed by a high temperature of the compressor.
9. The system of claim 8, wherein:
the sterilizer includes a sterilization tank through which a refrigerant flow path downstream of the compressor passes; and is also provided with
The collected moisture is stored in the sterilization case and then sterilized.
10. The system of claim 8, wherein:
the sterilizer is a sterilizing flow path wound around an outer circumferential surface of the refrigerant flow path downstream of the compressor; and is also provided with
Moisture collected in the moisture collector passes through the sterilization flow path so that bacteria in the moisture are killed.
11. The system of claim 8, wherein:
a multi-way valve is provided downstream of the compressor in a refrigerant moving direction to be controlled by a controller; and is also provided with
The multi-way valve is controlled by the controller to select at least one of the sterilizer and the in-vehicle air-conditioning condenser to supply a refrigerant thereto, thereby performing at least one of in-vehicle heating or moisture sterilization.
12. The system of claim 7, wherein:
the moisture collector is a condensate tank in which condensate water generated in an evaporator of the refrigerant cycle section is stored;
the refrigerant flow path at one side of the evaporator is provided with an air flow path through which air passes; and is also provided with
A drain hole is formed below the air flow path in a direction of gravity so that condensed water is collected in the condensed water tank through the drain hole.
13. The system of claim 12, wherein:
the air flow path is provided with a washing part communicated with the outside; and is also provided with
The washing part includes an introduction port and a discharge port such that fluid introduced through the introduction port moves along the air flow path to wash the inside of the air flow path, and then the fluid is discharged through the discharge port to kill mold in condensed water.
14. The system of claim 7, wherein the moisture collector is a rain pool disposed in communication with an exterior of the vehicle such that rain water external to the vehicle is collected in the rain pool.
15. The system of claim 7, wherein:
the purge cycle section includes a concentration sensing member that measures a concentration of a specific gas contained in air in a vehicle; and is also provided with
The operation of the moisture supplier is controlled based on the concentration of oxygen or the concentration of carbon dioxide in the passenger compartment sensed by the concentration sensing part.
16. The system according to claim 15, wherein a controller determines the number of passengers within the vehicle based on information of a decrease in the amount of oxygen or an increase in the amount of carbon dioxide in the passenger compartment sensed by the concentration sensing element, and considers the determined number of passengers in air conditioning of the passenger compartment.
17. The system of claim 1, wherein:
the purge cycle section includes a concentration sensing member that measures a concentration of a specific gas contained in air in a vehicle; and is also provided with
The controller determines a mass of air in the vehicle based on the information related to the concentration of oxygen or the concentration of carbon dioxide in the passenger compartment sensed by the concentration sensing element and a reference value input to the controller in advance, and controls the purge cycle so that the mass of air in the vehicle is maintained at the reference value or more.
18. The system of claim 1, wherein a controller determines the number of passengers in the vehicle based on information related to whether passengers are present transmitted from a passenger sensing member provided in a seat, and controls the degree of operation of at least one of the cool air circulation section, the warm air circulation section, the purge circulation section, and the refrigerant circulation section based on the number of passengers.
19. The system of claim 1, wherein the purge cycle section includes at least one of a carbon dioxide absorber, an air scrubber, an oxygen generator, and a moisture supply, and the moisture collected in the moisture supply is provided to the air scrubber or the oxygen generator.
20. The system of claim 1, wherein the vehicle body is provided with a pressure retainer configured to open or close, the door being opened or closed when the pressure retainer counteracts a pressure differential between an exterior and an interior of the vehicle.
21. The system of claim 1, wherein:
the cold air circulation section and the refrigerant circulation section further include a controller configured to control the cold air circulation section and the refrigerant circulation section; and is also provided with
In the cooling mode, the controller performs control to cause cooling of the in-vehicle air via heat exchange with the refrigerant such that the cooled in-vehicle air is supplied again to the passenger compartment, and the refrigerant is cooled via the evaporator of the refrigerant cycle section.
22. The system of claim 1, wherein:
the hot air circulation section and the refrigerant circulation section further include a controller configured to control the hot air circulation section and the refrigerant circulation section; and is also provided with
In the heating mode, the controller performs control to cause the temperature of the in-vehicle air to be raised via heat exchange with the refrigerant so that the air having the raised temperature is supplied again to the passenger compartment, wherein the temperature of the refrigerant is raised via the in-vehicle air-conditioning condenser and the compressor of the refrigerant circulation section.
23. The system of claim 1, wherein:
the purge cycle section and the refrigerant cycle section further include a controller configured to control the purge cycle section and the refrigerant cycle section; and is also provided with
In the purge mode, the controller performs control to cause the in-vehicle air processed by the compressor of the refrigerant cycle section and then purified to be supplied again to the passenger compartment.
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KR102453824B1 (en) 2022-10-12

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